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<head><meta charset="utf-8"><title>fifth meeting · t-compiler/wg-incr-comp · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/index.html">t-compiler/wg-incr-comp</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html">fifth meeting</a></h3>

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<a name="213842147"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213842147" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Julian-Wollersberger <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213842147">(Oct 19 2020 at 20:37)</a>:</h4>
<p>Hi, I'm new here. Can I chime in on tomorrows meeting?</p>



<a name="213842395"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213842395" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213842395">(Oct 19 2020 at 20:39)</a>:</h4>
<p>Absolutely! Anyone interested is welcome to attend!</p>



<a name="213842507"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213842507" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213842507">(Oct 19 2020 at 20:39)</a>:</h4>
<p>I see there is Zoom info on the compiler team calendar but I'm not sure if it's accurate (we had issues with it last time).</p>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> Do you know if the compiler team calendar is correct?</p>



<a name="213843106"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213843106" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Julian-Wollersberger <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213843106">(Oct 19 2020 at 20:45)</a>:</h4>
<p>Thanks!<br>
(There is a link pnkfelix <a href="#narrow/stream/241847-t-compiler.2Fwg-incr-comp/topic/fourth.20meeting/near/212416971">sent</a> last week.)</p>



<a name="213844437"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213844437" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213844437">(Oct 19 2020 at 20:55)</a>:</h4>
<p>I'll go ahead and include what's on the calendar in case that's useful:</p>
<p>Join Zoom Meeting<br>
<a href="https://zoom.us/j/91544128512?pwd=VTBiRVppdzBqdmNUc2JIY0hhV2pPdz09">https://zoom.us/j/91544128512?pwd=VTBiRVppdzBqdmNUc2JIY0hhV2pPdz09</a></p>
<p>Meeting ID: 915 4412 8512<br>
Passcode: 387283</p>



<a name="213844484"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213844484" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213844484">(Oct 19 2020 at 20:55)</a>:</h4>
<p>Yeah I need to look into that. We have our meeting tomorrow</p>



<a name="213844636"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213844636" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213844636">(Oct 19 2020 at 20:56)</a>:</h4>
<p>That info looks right according to my Zoom app</p>



<a name="213844743"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213844743" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213844743">(Oct 19 2020 at 20:57)</a>:</h4>
<p>Okay it appears I have the credentials to start that meeting, so it should work for us tomorrow</p>



<a name="213860405"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213860405" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> DPC <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213860405">(Oct 19 2020 at 23:45)</a>:</h4>
<p>i might not make it for tomorrow - haven't worked much on the issue assigned to me will get back to it once i'm done with some pr work <span aria-label="grinning" class="emoji emoji-1f600" role="img" title="grinning">:grinning:</span></p>



<a name="213860498"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213860498" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> oliver <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213860498">(Oct 19 2020 at 23:47)</a>:</h4>
<p>I will watch the videos afterwards <span aria-label="laughing" class="emoji emoji-1f606" role="img" title="laughing">:laughing:</span></p>



<a name="213907977"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213907977" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213907977">(Oct 20 2020 at 12:01)</a>:</h4>
<p>Meeting should be just now, right? <span class="user-group-mention" data-user-group-id="3282">@wg-incr-comp</span></p>



<a name="213908050"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213908050" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213908050">(Oct 20 2020 at 12:01)</a>:</h4>
<p>I think so, I'm "waiting for host" on zoom</p>



<a name="213908616"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213908616" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213908616">(Oct 20 2020 at 12:05)</a>:</h4>
<p>Same</p>



<a name="213908833"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213908833" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Julian-Wollersberger <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213908833">(Oct 20 2020 at 12:07)</a>:</h4>
<p>I have a Zoom lizence. Should I start a meeting instead?</p>



<a name="213908896"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213908896" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Julian-Wollersberger <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213908896">(Oct 20 2020 at 12:07)</a>:</h4>
<p>Nevermind, the meeting started ^^</p>



<a name="213909007"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213909007" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213909007">(Oct 20 2020 at 12:08)</a>:</h4>
<p><a href="https://hackmd.io/Ban950hJTRyKzmq9_7fHsg">https://hackmd.io/Ban950hJTRyKzmq9_7fHsg</a></p>



<a name="213909931"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213909931" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213909931">(Oct 20 2020 at 12:19)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/pull/75641">https://github.com/rust-lang/rust/pull/75641</a></p>



<a name="213910302"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213910302" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213910302">(Oct 20 2020 at 12:23)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/blob/554633534c550d20715e5e1576702b1f035586ad/compiler/rustc_middle/src/dep_graph/mod.rs#L107-L111">https://github.com/rust-lang/rust/blob/554633534c550d20715e5e1576702b1f035586ad/compiler/rustc_middle/src/dep_graph/mod.rs#L107-L111</a></p>



<a name="213911319"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/213911319" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aaron Hill <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#213911319">(Oct 20 2020 at 12:32)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/blob/554633534c550d20715e5e1576702b1f035586ad/compiler/rustc_session/src/session.rs#L215">https://github.com/rust-lang/rust/blob/554633534c550d20715e5e1576702b1f035586ad/compiler/rustc_session/src/session.rs#L215</a></p>



<a name="214072263"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214072263" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214072263">(Oct 21 2020 at 16:01)</a>:</h4>
<p>I mentioned on the call that I was writing up a comment before approving <span class="user-mention" data-user-id="116266">@Santiago Pastorino</span>'s PR. Well that comment turned into a small document as I dug into the data. I'd appreciate it if a few others could take a look and see if the analysis makes sense and if you agree with my conclusions. Thanks!</p>
<p><a href="https://hackmd.io/xT9WrXgOQLarYRGrV8Hqog">https://hackmd.io/xT9WrXgOQLarYRGrV8Hqog</a></p>



<a name="214074082"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214074082" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214074082">(Oct 21 2020 at 16:11)</a>:</h4>
<p><span class="user-mention" data-user-id="125250">@Wesley Wiser</span> makes sense to me</p>



<a name="214074569"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214074569" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214074569">(Oct 21 2020 at 16:14)</a>:</h4>
<p>likewise</p>



<a name="214130737"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214130737" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214130737">(Oct 22 2020 at 00:16)</a>:</h4>
<p>Thanks!</p>



<a name="214185109"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214185109" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214185109">(Oct 22 2020 at 13:17)</a>:</h4>
<p><span class="user-mention" data-user-id="125250">@Wesley Wiser</span> regarding the parts of the hackmd labelled "CGU Issue 1" and "CGU Issue 2": are there actual github issues filed for each of these problems? That is, I assume these are things we should track at the very least; and if we actually think we might be able to <strong>address</strong> them, then it would be helpful to have github issues if only to serve as "global" unique identifiers for them?</p>



<a name="214185325"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214185325" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214185325">(Oct 22 2020 at 13:19)</a>:</h4>
<p>Yeah, that's a great idea. I'm not aware of any existing issues tracking that so I can create some.</p>



<a name="214185455"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214185455" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214185455">(Oct 22 2020 at 13:20)</a>:</h4>
<p>"Issue" is perhaps too strong a word. It's more that the existing behavior is suboptimal in certain cases. Regardless, we use issues to track other enhancements so that seems fine to me.</p>



<a name="214211765"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214211765" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214211765">(Oct 22 2020 at 16:25)</a>:</h4>
<p>btw does <a href="https://github.com/rust-lang/rust/issues/76896">#76896</a> needs a <code>@bors retry</code> or what's going on?</p>



<a name="214252510"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214252510" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> DPC <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214252510">(Oct 22 2020 at 21:50)</a>:</h4>
<p>it's not spurious though</p>



<a name="214853119"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/241847-t-compiler/wg-incr-comp/topic/fifth%20meeting/near/214853119" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/241847-t-compiler/wg-incr-comp/topic/fifth.20meeting.html#214853119">(Oct 28 2020 at 15:31)</a>:</h4>
<p>a little overdue: <a href="https://youtu.be/aw629QKeSjQ">https://youtu.be/aw629QKeSjQ</a></p>
<div class="youtube-video message_inline_image"><a data-id="aw629QKeSjQ" href="https://youtu.be/aw629QKeSjQ"><img src="https://i.ytimg.com/vi/aw629QKeSjQ/default.jpg"></a></div>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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